Water Filtration, Water Filter Solutions, Water Filters, Filter for Water, Water Coolers, Purifiers for Drinking WaterMock Plumbing also specializes in water filtration solutions and can help provide either a whole house or point-of-use filters. A whole house filter is normally a fully automated, back washable system filtering water at the main water source before entering a home. Point-of-use filter is for filtering a single faucet or source. There are many different technologies and companies offering a wide variety of filtration systems. Mock Plumbing recommends that you find a reputable company that will research your specific need, rather than selling you a system that may be overkill or does not correct your problem. A reverse osmosis filtration system as shown here, are commonly installed under a kitchen sink.